Finding the Fourth Proportional to 78,889,681.96, 118,334,523.93 and 21,381,953.09
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Solution
The fourth proportional to 78,889,681.96, 118,334,523.93 and 21,381,953.09 is: 32,072,929.90
Step by Step Solution
- Step 1: Write the proportion equation
78,889,681.96 : 118,334,523.93 = 21,381,953.09 : x - Step 2: Convert to fraction form
78,889,681.96/118,334,523.93 = 21,381,953.09/x - Step 3: Cross multiply
78,889,681.96x = 118,334,523.93 × 21,381,953.09 - Step 4: Simplify right side
78,889,681.96x = 2,530,223,239,598,742.50 - Step 5: Solve for x
x = 2,530,223,239,598,742.50/78,889,681.96 - Step 6: Final answer
x = 32,072,929.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.